<p>
The #include directive shall only refer to predefined folders and therefore relative paths are not allowed.
</p>

<p>
The following code snippet illustrates this rule:
</p>

<pre>
#include &lt;stdio.h&gt; // Compliant
#include &lt;../string&gt; // Non-Compliant
#include &quot;/apath/string&quot; // Non-Compliant
#include &quot;../apath/string&quot; // Non-Compliant
#include &quot;./apath/string&quot; // Non-Compliant
#include &quot;\apath/string&quot; // Non-Compliant
#include &quot;..\apath/string&quot; // Non-Compliant
#include &quot;apath/string&quot; // Compliant
</pre>
